Particulate material I agree. That's why they have to have scrubbers to keep it out of the atmosphere now. Poisonous gasses should not be allowed into the atmosphere at all. However, CO2 is not a poisonous gas. In fact it is the fundamental building block of all life on this planet and the more CO2 in the atmosphere the better.
It has been shown to have zero effect on global temperatures. That theory is now toast. But pollution control is always important and necessary. Just make sure you're cleaning up something that IS a pollutant.
CO2 isn't.
When was CO2 shown to have zero effect on global temperatures?
There is as much evidence to show that increases in CO2 followed increases in temperature as there is evidence that rise in temperature followed increases in CO2.
All credible scientists now agree that global warming is in a stalled period and there has been no appreciable warming for about a decade or so now. And yet the CO2 levels have continued to increase. Shouldn't that at least give you pause for thought that if CO2 was capable of significantly heating up the atmosphere, that we would see that in atmospheric temperatures for the last ten years or so?
And that, my friend, is based on that empirical evidence that you seem to believe does not exist. You do know what empirical evidence is don't you? As opposed to speculation based on computer models?